开云体育

Hi Friends, My apologies if this mail seems to be repeated. I found two things wrong with it. 1. The mails to the CQ_VU group and to VUSAT group were returned 'undeliverable'. Hope this time they go

Dear Editor, This mail is to lodge a very strong protest at the way you've described Amateur Radio (Ham) hobby as being 'faintly embarassing'. I refer to the paragraph on your website:

[This is from John G0UCP but mistakenly sent to the group owner not the group!]

Dear Sir, Yes, it is about how to connect it (T2), please add additional schematic for T2 trifilar between the 2N2219 and the IRF510. Thanks.

That would probably help a lot of us, as the particulars for winding a trifilar transformer are much more difficult than just a bifilar. Here is a hint for winding any kind of RF transformers. Use

Hello Milarepa, I mentioned "A major difference with the original schematic is that I do not use a bifilar transformer between the 2N2219 and the IRF but a trifilar transformer. This gives much

Dear Sir, You said that "...between the 2N2219 and the IRF but a trifilar transformer..." But your modification picture ( Amplifier stages BITX17.doc ) is about T1, that is between IRF510 and

Hi, Some time ago I put some pictures in the photobox. Now I have time to say something about them. The pictures shows the shape of my IF-filter 10MHz. They were made with the computer and the

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /MODIFICATIONS/Amplifier stages BITX17.doc

Hi all, It seems that the activity is reduced since some time, or has everyone the BITX working (and playing with it)? For the persons that want to see what others did with the last amplifier

Hi Chris, I am very busy with the QRL on the moment but I hope to put them in the picture box within two weeks. 73's, Ruud

Hi Ruud, stupid to do this in the English language as we are both Dutch ;-) A nice thing of the program is that you can save the result of a measurement and display both. Then the change is clearly

Thank you for your message. I just tried the program to get a shape of my ladder filter. I put a noise-source in the input. With the average in the program on 100 you can even see what happens to

Hi all, I found a very easy to use tool to measure the shape of the x-tal filter. http://www.qsl.net/pa2ohh/04audio.htm The programm is small and the only needed hardware is your PC and a cable

Hi BITX20 Builders, I have just included a section on my website of the BITX20. For those who may be contemplating building a vfo stabilizer based on the EI9GQ design, I have included the source

Dear K7HKL Arv, Start from this month, I do not have much time as before to make a project, since I have to work & move to another town and back home at weekend. Sure I will continue my BITX soon as

MILAREPA There are also articles on simple frequency counters on Hans G0UPL and Miguel PY2OHH web sites. http://www.hanssummers.com/ http://geocities.yahoo.com.br/py2ohh/ How is

Yes, sorry Miguel. No wonder it didn't work for me the first time! 73 Hans G0UPL

Hi Hans ... Hi Guys ! I am always listening the messages of this group... back the wall ... hi ! Note that the correct adress of my page is http://geocities.yahoo.com.br/py2ohh/ you forget the

Hello, There is a new article about simple frequency counter, at PA2OHH site, "BINARY DECIMAL LED DISPLAY VERSIONS OF THE SIMPLE FREQUENCY COUNTER " 'Probably' suit to your BITX. Click here